Tactics From Proofs

Proof guarantees the correctness of a formal specification with respect to formal requirements, and of an implementation with respect to a specification, and so provides valuable verification methods in high integrity system development. However, proof development by hand tends to be an erudite, error-prone and seemingly interminable task. Tactics are programs that drive theorem-provers, thus automating proof development and alleviating some of the problems mentioned above. The development of tactics for a particular application domain also extends the domain of application of the theorem-prover. A LCF-tactic is safe in that if it fails to be applicable to a particular conjecture, then it will not produce an incorrect proof. The current construction of tactics from proofs does not yield sufficiently robust tactics. Proofs tend to be specific to the details of a specification and so are not reusable in general, e.g. the same proof may not work when the definition of a conjecture is changed. The major challenges in proof development are deciding which proof rule and instantiations to apply in order to prove a conjecture. Discerning patterns in formal interactive proof development facilitates the construction of robust tactics that can withstand definitional changes in conjectures. Having developed an interactive proof for a conjecture, we develop the necessary abstractions of the proof steps used, to construct a tactic th at can be applicable to other conjectures in that domain. By so doing we encode human expertise used in the proof development, and make proofs robust and thus generally reusable. We apply our theory on the proofs of conjectures involving some set theory operators, and on the proof obligations that arise in the formal development of numerical specifications using the retrenchment method under the IEEE-854 floating-point standard in the PVS theorem-prover/proof-checker

The Material Politics of Revolution and Counter-Revolution: Labor Organization, Autonomy and Democratization in Egypt (2011-2016)

This is a study of democratization in Egypt through the lens of labor organization in the period following the fall of Hosni Mubarak. As a vehicle for collective action that is perpendicular to the Islamist-secular divide, labor organization produced cross-cutting cleavages that transcended intractable identity-based divisions. The suspension of prior constraints on political mobilization opened up spaces for the construction of autonomous working class organizations. An important subset of democratization theory has emphasized the role of working class organizations and political conflict over resource allocation in the institutionalization of democratic orders. The double-negative of the non-emergence of an autonomous organization of the working class and the failure of democratic transition in Egypt steers this study away from a macro-level assessment of the impact of labor autonomy on democratization towards an expository account of the forms of political action undertaken in the pursuit of political autonomy. Taking the assembly of political actors as projects, I examine how various groups sought to mobilize available resources in those projects. In consecutive chapters I consider the impact of available tools, and gravitational constraints of economic legacies, institutional vestiges, the media environment and the legal apparatus on the failures and success of these efforts. What remains of these projects should impact future efforts to construct autonomous political actors, which in this study are defined as political subjects capable of a destructive withdrawal from alliances, the credible threat of which institutionalizes the vulnerability of a governing regime

Resilience capabilities in the face of environmental turbulence: a case of Hong Kong small to medium enterprises

This thesis adopts an explanatory sequential mixed-approach, incorporating two inter-related studies investigates the resilience capabilities of Hong Kong-based SMEs. Specifically, the overall objective is to empirically examine the multidimensionality of resilience capability, and how each dimension is developed, utilized, and evolved over time and in various contexts. Study 1 involves a survey of 177 Hong Kong-based SMEs and explores the interrelationship between resilience capabilities and firm performance, and the moderating impact of environmental turbulence on these relationships. Extending the findings of Study 1, Study 2 involves an in-depth qualitative examination of the ways in which SMEs utilize resilience capabilities in strategy development for dealing with threats and opportunities. The objective of Study 2 is to address the issues that arose from Study 1 with the aim of providing an understanding of how relationships between dimensions are established pre-, during- and post-crisis phases. Through an in-depth review of literature across disciplines, survey and case study interviews, this thesis defines resilience as a multidimensional capability that is expressed through organizational strategies, comprising four dimensions (adaptability, agility, anticipatory ability and flexibility) that are conceptually and empirically distinct from one another.. These dimensions are articulated either proactively or reactively in the process of effective strategy development during pre-, at times of, or post crisis environments. Findings also reveal five ways of utilizing resilience capability during strategy development process (defining, founding, planning, redefining, conforming) with differential emphasis on dimensions at different phases of turbulent environments, be it pre-, during, or post-crisis conditions. These findings have important implications for strategy development, SME business practice, research and practice

1992-1993 Bulletin

Volume 103, Number 4. Scanned from the copy held in the Registrar\u27s Office.https://ecommons.udayton.edu/bulletin/1036/thumbnail.jp

1993-1994 Bulletin

Volume 104, Number 4 Scanned from the copy held in University Archives and Special Collections.https://ecommons.udayton.edu/bulletin/1065/thumbnail.jp

1994-1995 Bulletin

Volume 105, Number 4 Scanned from the copy held in University Archives and Special Collections.https://ecommons.udayton.edu/bulletin/1066/thumbnail.jp

Picturing Everyday Life: Politics and Aesthetics of Saenghwal in Postwar South Korea, 1953-1959

Following the collapse of the Japanese Empire (1945) and the devastation of the Korean War (1950-1953), the question of how to represent and imagine “everyday life” or “way of life” (saenghwal, 生活) became a focal point of post-colonial and Cold War contestations. For example, President Syngman Rhee’s administration attempted to control the discourse of “New Life” (shinsaenghwal) by linking the spatio-temporality of the everyday to reconstruction and modernization. “Everyday life” was also a concept of strategic interest to the United States, whose postwar hegemonic ambitions in East Asia meant spreading “the truth” about an idealized vision of American way of life through government agencies such as the United States Information Service (USIS). These ideas and representations were designed to interpellate the South Korean people into a particular kind of regulatory relationship with their bodies and minds, their conduct of their day-to-day lives, their vision of themselves within the nation and the “Free World.” “Everyday life” became, in other words, part-and-parcel of Cold War governmentality’s mechanism of subjectification. Overly privileging these top-down discourses and techniques, however, can foreclose a nuanced understanding of a rich and complex set of negotiations over the meaning of saenghwal underway in both elite intellectual and popular imagination. Through my examination of literature, criticism, reportage, human-interest stories, government bulletins, philosophical essays, photography (artistic, popular, journalistic, archival, exhibition), cartoons, and educational and feature films, I characterize this period broadly in terms of “postwar crisis of modernity.” If “colonial modernity” in Korea had consisted of tensions and collaborations between colonialism, enlightenment, and modernization, then the emergent neocolonial order of the Cold War would give rise to a reconfiguration of this problematic: national division, South Korea’s semi-sovereignty vis-à-vis the U.S. and the denial of decolonization accompanied by the false promise of democratic freedom and American-style prosperity. Negotiations of this crisis can be found across urban and rural space, contesting the representation and dissemination of universalist and developmentalist “everyday life,” which was linked to the postwar restoration of the enlightenment subject. The stakes of these contestations through the framework of saenghwal could be ontological, aesthetic, economic, affective or universalist, and were articulated across popular and intellectual registers. While works of recent English-language scholarship in modern Korean history have productively explored the question of everyday life during the colonial period and in DPRK after liberation, no work thus far has examined the significance of the relationship between intermediality and saenghwal in the cultural field of ROK in the postwar 1950s. In addition to building on the current trend of scholarship that emphasizes the continuity between colonial and post-colonial cultural formations, my analysis of literature opens up future avenues of research for those interested in understanding literature’s intersection with modes of reportage, photography, and mass visuality. The chapter on the countryside draws from a diverse array of cultural productions to analyze a space that has traditionally been discussed within the limited geopolitical context of U.S. aid and development; no scholar to my knowledge has undertaken medium-specific inquiry to think through ontological and aesthetic negotiations unfolding in the countryside. My chapter on film culture reads the postwar debates around plagiarism/imitation, melodrama/sinp’a, and realism/neorealism through the gendering discourse of “everyday feelings” (saenghwal kamjŏng), and analyzes understudied films of the era with particular attention paid to their exploration of postwar sentiment. Finally, the last chapter intervenes on the wealth of existing scholarship on The Family of Man in visual studies by situating it within a broader formation of the postwar enlightenment subject as a democratic modernizing ideal. By focusing on the affective premise of this ideal, I contribute to the existing scholarship on theories of everyday life, sovereignty, and Cold War culture, which have tended to neglect the role of intermediation and affective interpellation in the governmentality of everyday life